Valve.



PATENTBD DEC. 22, 1903.

J. W. NETHERY.

VALVE.

`APPLIQMION FILED nov. a, 1901.

N0 MODEL.

INVENTOR. .ose/WDW e272/ UNITED STATES Patented December 22, QS.

PATENT OFFICE.

JOSEPH W. NETHERY, OF INDIANAPOLIS, INDIANA, ASSIGNOR TO THE NETHERYHYDRAULIC VALVE COMPANY, OF INDIANAPOLIS, INDI- ANA, A CORPORATION OFNEW JERSEY.

VALVE.`

SPECIFICATION'Ai-orming part of Letters Patent No. 747,468, datedDecember 22, 1903.

' Application filed November 8, 1901. Serial No. 81,545. (No model.)

To all whom it my concern:

Be it known that I, JOSEPH W. NETHEEY, a citizenof the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented certainnew and useful Improvements in Valves, of which thefollowing is a specification.

This invention relates to that variety of valves or faucets which whenopened will after a predetermined iow of fluid automatically close.

A valve embodying said invention will be rst fully described and thenovel features thereof then pointed out in the claims.

Referring to the accompanying drawings, which are made a part hereof,and on which similar reference characters indicate similar parts, Figure1 is a central vertical sectional view of a valve or faucet embodying mysaid invention, the main valve and the startingvalve being both shown inclosed position; Fig. 2, a similar view, except that the starting-valvehas been raised, the parts being shown in the positions they occupy justbefore the main valve starts to open; and Figs. 3 and 4, horizontalsectional views looking downwardly from the dotted lines 3 3 and 4 4,respectively, in Fig. 1.

Assuming this valve to be arranged in the ordinary way for controllingfluid, such as Wate'r, the iiuid enters from the side through theingress-opening at 5, as indicated by the arrow at that point, andpasses out throughV the main-valve seat to the egress pipe or opening 6,as indicated by the arrow at that point. The body or shell 7 of thevalve contains the main-valve seat 8 and is provided with a removablecap 9. This valve is in the main preferably in the form of a cylinder.Within the chamber is the main-valve structure, con

sisting of the main valve 10, a hollow stem 11, and a piston-head 12.Said piston-head is at the opposite end of the stern from the main valveand is of larger diameter than said main valve, so that the valve andthe piston-head present dierential surface areas to the pressure of theincoming fluid. The upper edge of the piston-head extends to above theingress-opening, and thus divides the cylindrical chamber into twocompartments,

l one below the piston-head, into which the incoming fluidimmediatelydischarges, and the other above said piston-head, to whichingress is had'by a small opening, as by the perforation p. Saidpiston-head is shown as cupshaped in form, the cup portion beinginteriorly screw-threaded, with a gasket 13 in the bottom ofthe cup,where it is held by an annular screw-threaded follower' 14.. Said gasketforms a seat for the starting-valve 15, which is formed or carried onthe stem 16, which extends to the outside of the main- Valve structureand also extends down into the tubular opening through the main-valvestem 11, and preferably carries upon its lower end a star-shaped guide17, by which it is guided it its movements, while the passage of fluidis not prevented. Upon the upper end of said stem isa knob or button 18,by means of which the starting-valve is manipulated by the operator.This starting-valve 15 is disk-like in form and its exposed surface isupward when said valve is closed, so that g is guided in opening by thewings 20, as

shown, andas will be readily understood.

The operation of my improved valve is as follows: The main valve beingclosed, the starting-valve 15 is raised from-the position shown in Fig.1 to the position shown in Fig. 2. This Vleaves a free passage for theduid which has accumulated in the compartment above the piston-head outthrough the discharge-way lformed by the orifice in the tubularvalve-stem 11, and thus relieves the pressure in said compartment.Thepressure of the incoming fluid (being greater upon the piston-headthan upon the main valve by reason of its larger area) forces themain-valve structure up, thus opening the main valve and permitting theincoming fluid to iiow through. As the main-valve structure reaches itsuppermost position the gasket 13 in the IOO piston-head 12, which formsthe seat for the starting-valve l5, comes against the startingvalve,thus seating it and stopping the flow through the opening in thevalve-stem ll. The small quantity of liuid which is entering through theperforation p presently lls the compartment of the chamber-above thepistonhead, equalizing the pressure on the two sides of the piston-headand permitting the pressure on the main valve l0 to force it down ontoits seat. Said main-valve structure is accompanied in this movement bythe starting-valve, which is kept in contact with its seat on saidmain-valve structure, as above stated. The time which this last-namedoperation occupies, and consequently the quantity of Huid which shall bedischarged a-t one operation of the valve, is determined by adjustingthe effective size of the perforation p, which may be done by means ofthe slitted screw 2l, which is placed therein.

Having thus fully described my said invention, whatI claim as new, anddesire to secure by Letters Patent, is

l. The combination, in a piston-valve, of a shell or body containing acylindrical chamber and having a main-valve seat at its discharge endand also having an ingress-opening at one side between the valve-seatand the opposite end, a main-Valve structure situated in said chambercomposed of a hollow valvestem with the main valve upon one end thereofand a piston head upon the other, said piston-head extending to abovethe ingress-opening and dividing the chamber into two compartments, apassage from the ingress to the upper compartment, a startingvalvearranged in the upper compartment and having its valve-seat on the uppersurface of lthe piston-head, a valve-stem carrying said starting-valveand extending through the head of the main shell or body to the outsidewhere it can be reached by the operator and also extending down throughsaid valve into the orifice in the main-valve stem whereby it is guided,substantially as shown and described.

2. The combination, in a piston-valve, of a main-valve structure havingan upper and a lower compartment, a central discharge-ori lice leadingfrom the upper compartment of the Valve-chamber down through to a pointadjacent to the main egress-opening, and a starting-valve stem extendingup through the head of the main shell or body to the outside, and astarting-valve carried thereby and situated in said upper compartmentand adapted to close said orifice, said starting-valve being in the formof a disk at its lower or operative end which presents a surface to theaction 0E the uid in said compartment when filled, whereby the pressureof such fluid causes said starting-valve to remain seated until forciblyopened, substantially as shown and described.

3. The combination, in a piston-valve, the main-valve structure whereincontains a discharge-critica leading from the upper compartment downthrough said structure to a point adjacent to the main egress-opening,of an auxiliary or starting valve situated in said upper compartment,and a valve-stem carrying said starting-valve, the lower end of saidstem passing down into the dischargeorifice in the main-valve structurewhere it is provided with a guide for controlling its movement, and theupper end passing up through a suitable stuffing-box to the outsidewhere it can be reached for operating said starting-valve, substantiallyas set forth.

In witness whereof I have hereunto set my hand and seal, atIndianapolis, Indiana, this 10th day of October, A. D. 1901.

JOSEPH W. NETHERY.

